104221507 has 4 divisors (see below), whose sum is σ = 112238560. Its totient is φ = 96204456.

The previous prime is 104221499. The next prime is 104221511. The reversal of 104221507 is 705122401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705122401 = 9883 ⋅71347.

It is a cyclic number.

It is not a de Polignac number, because 104221507 - 2³ = 104221499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104221567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4008507 + ... + 4008532.

It is an arithmetic number, because the mean of its divisors is an integer number (28059640).

Almost surely, 2^104221507 is an apocalyptic number.

104221507 is a deficient number, since it is larger than the sum of its proper divisors (8017053).

104221507 is an equidigital number, since it uses as much as digits as its factorization.

104221507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017052.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 104221507 is about 10208.8935247656. The cubic root of 104221507 is about 470.6005707217.

Adding to 104221507 its reverse (705122401), we get a palindrome (809343908).

The spelling of 104221507 in words is "one hundred four million, two hundred twenty-one thousand, five hundred seven".